Cups to Grams Converter

Accurate, ingredient-by-ingredient conversion — because a cup of flour and a cup of sugar don't weigh the same.

By Jamal, EasyCalcHub · Last updated July 2026

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Ingredient

Amount (cups)

Cup size

125 g

1 US cup of all-purpose flour

Quick answer

A cup measures volume and a gram measures weight, so the conversion depends on the ingredient's density. One US cup of all-purpose flour weighs about 125 g, one cup of granulated sugar about 200 g, and one cup of butter about 227 g. Pick your ingredient above for an exact, density-based result.

Cups to grams — common ingredients (1 US cup)

Weights use the spoon-and-level method and a US cup of 236.6 ml. Values are approximate — density varies with brand, humidity and how you measure.
Ingredient	1 cup (g)	½ cup (g)	¼ cup (g)
All-purpose flour	125	63	31
Bread flour	130	65	33
Cake flour	115	58	29
Whole wheat flour	130	65	33
Almond flour	96	48	24
Cornstarch / cornflour	120	60	30
Cocoa powder	85	43	21
Granulated (white) sugar	200	100	50
Caster sugar	225	113	56
Brown sugar (packed)	220	110	55
Powdered / icing sugar	120	60	30
Honey	340	170	85
Maple syrup	322	161	81
Butter	227	113	57
Whole milk	245	123	61
Heavy cream	238	119	60
Plain yogurt	245	123	61
Cream cheese	232	116	58
Vegetable oil	218	109	55
Water	237	118	59
White rice (uncooked)	185	93	46
Rolled oats	90	45	23
Breadcrumbs (dry)	108	54	27
Chocolate chips	170	85	43
Raisins	145	73	36
Chopped nuts	120	60	30
Peanut butter	258	129	65
Shredded cheese	113	57	28
Table salt	273	137	68

How the conversion works

Grams for a given number of cups is found with a simple formula that includes the ingredient's density:

Formula: grams = cups × cup size (ml) × density (g/ml). For a different cup standard, the weight scales by the ratio of that cup's volume to the US cup.

For example, all-purpose flour has a density of roughly 0.53 g/ml. One US cup (236.6 ml) therefore weighs about 236.6 × 0.53 ≈ 125 g. Denser ingredients such as honey (about 1.44 g/ml) weigh far more per cup — around 340 g.

Spoon-and-level vs. scooping

How you fill the cup changes the weight by up to 20–25%. Spooning flour into the cup and levelling the top (the method these values assume) gives a lighter, more consistent result than dipping the cup straight into the bag, which packs the flour down.

Why cup size matters

A "cup" isn't the same everywhere. The US cup is 236.6 ml, but Australia and most metric recipes use 250 ml, and an old UK imperial cup is 284 ml. Use the Cup size selector to match your recipe's origin.

Frequently asked questions

How many grams is 1 cup of flour?

One US cup of all-purpose flour weighs about 125 g when spooned and levelled. Bread flour is a little heavier (about 130 g) and cake flour lighter (about 115 g).

How many grams is 1 cup of sugar?

One US cup of granulated white sugar weighs about 200 g. Packed brown sugar is about 220 g, and powdered (icing) sugar is about 120 g.

How many grams is 1 cup of butter?

One US cup of butter weighs about 227 g, which equals two US sticks or 8 ounces. Half a cup is one stick, about 113 g.

Why do different websites give different gram values?

Because volume measuring is imprecise. The weight of a cup of flour depends on the flour type, the humidity, and whether you spoon or scoop. Published values usually range from 120–130 g per cup of all-purpose flour for this reason.

Is it better to weigh in grams or measure in cups?

For baking, weighing in grams is more accurate and repeatable, since it removes the guesswork of how tightly an ingredient is packed. A digital kitchen scale eliminates most recipe inconsistencies.

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Disclaimer: These conversions are provided for general information and home cooking only, and are offered without warranty of any kind. Ingredient densities vary by brand, region, freshness and how you measure, so all results are approximate. For nutrition labelling, allergen management, medical diets or any commercial use, always verify measurements independently. Density values are based on commonly published references including King Arthur Baking and USDA FoodData Central; EasyCalcHub is independent and not affiliated with these organisations.